• 中文核心期刊要目总览
  • 中国科技核心期刊
  • 中国科学引文数据库(CSCD)
  • 中国科技论文与引文数据库(CSTPCD)
  • 中国学术期刊文摘数据库(CSAD)
  • 中国学术期刊(网络版)(CNKI)
  • 中文科技期刊数据库
  • 万方数据知识服务平台
  • 中国超星期刊域出版平台
  • 国家科技学术期刊开放平台
  • 荷兰文摘与引文数据库(SCOPUS)
  • 日本科学技术振兴机构数据库(JST)

越南中部发现棱皮树蛙属一新种(两栖纲:树蛙科)

A new species of the genus Theloderma Tschudi, 1838 (Amphibia: Anura: Rhacophoridae) from Tay Nguyen Plateau, central Vietnam

  • 摘要: 结合形态、分子和声学证据,将采自越南中部西原高原(Tay Nguyen Plateau)热带山地森林的棱皮树蛙属物种订为一新种——金背棱皮树蛙 Theloderma auratum sp. nov. 。 新种的主要鉴别特征为:(1)头部无骨脊;(2)皮肤非常光滑,无疣粒;(3)鼻子突出且细长,呈圆锥形;(4)雄性无声囊孔;(5)无犁骨齿;(6)雄性体型小(体长:21.8–26.4 mm);(7)头长大于宽度;(8)鼓膜小,上面有少量小突起;(9)无颞褶;(10)腹面光滑;(11)指间无蹼;(12)内外掌突明显;(13)趾间半蹼(蹼式:I 2–2¼ II 1½–2¾ III 2–3¼ IV 3–1½ V);(14)内蹠突椭圆型,无外蹠突;(15)虹膜呈二色;(16)背面金黄色,背部有少许的橙色斑点或网状纹路,和少许的黑褐色小斑点;(17)头侧和体侧具有宽的横向条纹,从深红棕色到黑色;这一条纹能清晰地与较浅着色的背部区分开;(18)身体,喉部和胸部的腹面呈灰蓝色,并有不明显的棕色斑点;(19)上眼睑有数个(3–5)非常小的红色扁平疣粒;(20)四肢背面红褐色;腹面棕色,具蓝白色小斑点。依据线粒体基因 12S rRNA–16S rRNA 分析发现,新物种与同属的其他已知物种有着明显的遗传分化(遗传距离 > 8.9%)。此外,我们描述了新物种的求偶鸣叫和蝌蚪形态。分子系统发育分析显示该新种与来自越南南部朗边高原(Langbian Plateau)的 Theloderma palliatum 组成姐妹群。

     

    Abstract: A new species of small tree frog from a primary montane tropical forest of central Vietnam, Tay Nguyen Plateau, is described based on morphological, molecular, and acoustic evidence. The Golden Bug-Eyed Frog, Theloderma auratum sp. nov. , is distinguishable from its congeners and other small rhacophorid species based on a combination of the following morphological attributes: (1) bony ridges on head absent; (2) smooth skin completely lacking calcified warts or asperities; (3) pointed elongated tapering snout; (4) vocal opening in males absent; (5) vomerine teeth absent; (6) males of small body size (SVL 21.8–26.4 mm); (7) head longer than wide; ED/SVL ratio 13%–15%; ESL/SVL ratio 16%–20%; (8) small tympanum (TD/EL ratio 50%–60%) with few tiny tubercles; (9) supratympanic fold absent; (10) ventral surfaces completely smooth; (11) webbing between fingers absent; (12) outer and inner metacarpal tubercles present, supernumerary metacarpal tubercle single, medial, oval in shape; (13) toes half-webbed: I 2–2¼ II 1½–2¾ III 2–3¼ IV 3–1½ V; (14) inner metatarsal tubercle present, oval; outer metatarsal tubercle absent; (15) iris bicolored; (16) dorsal surfaces golden-yellow with sparse golden-orange speckling or reticulations and few small dark-brown spots; (17) lateral sides of head and body with wide dark reddish-brown to black lateral stripes, clearly separated from lighter dorsal coloration by straight contrasting edge; (18) ventral surfaces of body, throat, and chest greyish-blue with indistinct brown confluent blotches; (19) upper eyelids with few (3–5) very small flat reddish superciliary tubercles; (20) limbs dorsally reddish-brown, ventrally brown with small bluish-white speckles. The new species is also distinct from all congeners in 12S rRNA to 16S rRNA mitochondrial DNA fragment sequences (uncorrected genetic distance P>8.9%). Advertisement call and tadpole morphology of the new species are described. Our molecular data showed Theloderma auratum sp. nov. to be a sister species of Th. palliatum from Langbian Plateau in southern Vietnam.

     

/

返回文章
返回